Optical notch filter using thermotropic liquid crystalline polymers

Tsai, M. L.; Chen, S. H.; Jacobs, S. D.
June 1989
Applied Physics Letters;6/12/1989, Vol. 54 Issue 24, p2395
Academic Journal
Poly(γ-benzyl L-glutamate), partially transesterified with 1-dodecanol, and polysiloxane were employed to fabricate a right- and left-handed optical element, respectively. The wavelength of selective reflection was tuned via physical blending or annealing at a proper temperature. An optical notch filter comprising elements with each handedness showed an optical density of 2.0 within the rejection band and 73 to 83% transmission outside the band, suggesting liquid crystalline polymers as promising materials for the construction of environmentally robust optical notch filters.


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